28359936 has 144 divisors (see below), whose sum is σ = 91734720. Its totient is φ = 8570880.

The previous prime is 28359931. The next prime is 28359967. The reversal of 28359936 is 63995382.

28359936 is a `hidden beast` number, since 28 + 3 + 599 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 28359891 and 28359900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28359931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75846 + ... + 76218.

Almost surely, 2^28359936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28359936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45867360).

28359936 is an abundant number, since it is smaller than the sum of its proper divisors (63374784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28359936 is a wasteful number, since it uses less digits than its factorization.

28359936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 389 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 28359936 is about 5325.4047733482. The cubic root of 28359936 is about 304.9545251560.

The spelling of 28359936 in words is "twenty-eight million, three hundred fifty-nine thousand, nine hundred thirty-six".